Series 3: How do I create a custom Gateway and/or Subnet with a capable CradlePoint router in IP Pass-Through?

Beverly McRae

If you are unsure of CradlePoint Series or Model number, please click here.This article was written based on firmware version 5.0.0


All current CradlePoint routers that support IP Pass-Through are the: CBA750B, CBR400, CBR450, IBR600, IBR650, and MBR1400.

Creating a custom gateway/subnet is a preventative measure to use when you have a block of consecutive static IP address from your provider.


  1. Click on Network Settings.
  2. Click on WiFi/ Local Networks.                                                                  User-added image
  3. Click on the Primary LAN check box.
  4. Click Edit                                                                                                        User-added image
  5. Click on the IPv4 Settings tab.
  6. Make sure your Routing mode is in fact IP Pass-Through.
  7. Set the Subnet Selection Mode to Custom Settings.
  8. Input your settings.                                                                                       User-added image

From here, you can create your own Gateway and Subnet; However, we recommend making your Gateway the same as your Static IP, except making the last octet a .1, and for subnet, a class C be fine.  For the device behind the CradlePoint, you will want to statically set its WAN port, to match the setting that were applied in the CradlePoint.  Your IP on the port should be the Static IP that you get from your provider, the Gateway will be the custom gateway that was just created (static ip of provider but last octet .1) and the class C subnet.

Example:  Cisco router behind a CradlePoint in pass through with a Verizon provided static ip  In the CradlePoint, you would set the Gateway to with a subnet.  Now in the Cisco you would need to set its Eth0 or whatever port you have connected to the CradlePoint as such, IP: GW: S/N:

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